<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        function Car() { }
        Car.prototype.name = '这是车车';
        var car = new Car();
        console.log(car);
        console.log(car.name);
        console.log(car.__proto__);
    </script>
</body>

</html>